Thin textured black acrylic sheet to use as a work surface when you work with your clay, 180x180mm. It is approximately 1.5mm thick. This one has a gorgeous leather grain look to it, check out image 2 for a closer look. Don't forget to use some sort of release to stop your clay sticking! You can use Badger Balm, Coolslip, Slik, or our non stick balm mini.